Window structure



May 13, 1930.

A. H. scHAFFERT.

WINDOW STRUCTURE INVENTOR. aoLF Jafar-#ERT A TToRNEYs.

BY l l Il' May 13, 1930. A. H. SCHAFFRT wINDow STRUCTURE 2 Sheets-Sheevt 2 Filed latch 20, 1929 IN V EN TOR.

TURN E YS.

ooLF H. 50mi-Peer "'IIII Patented May 13, 1930 UNITED; STATES A PATENT OFFICE ADOLF H. SGHAFFERT, OF YOUNGSTOWN, OHIO, ASSIGNOR TO TRUSCON STEEL COI- PANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF MICHIGAN WINDOW STRUCTURE .Application led Marchv 20, 1929. Serial No. 348,574.

In 'the manufacture of metal window frames and sash of the type in which the sash is swung to an open position, the limitations of the size of the. parts have been such that it has been impossible to open the sash fully without cutting away the corners of the sash.

This, however, causes other difficulties for when the sash is closed, the hood or weathering-strip on top of the frame must not only be lengthened, but the hood must be formed on a distinctive angle because the path of the upper end of the window is on an arc such that the window will not clear the under edve of the hood. This ange of the hood has die disadvantage that it allows air to pass beneath it and over the sash since the latter does not tightly fit. -Another difficulty has been that the notched corners leave exposed cracks that are objectionable for the same reasons.

The object of the presentinvention is to provide a structure in which a novel sash mounting is provided that insures the end of the window seating itself properly with respect to the hood, avoids the necessit of notching the corners of the sash, and al ows the window to open beyond a 90 degree angle.

In the accompanying drawings;

Figure 1 is a vertical sectional view of a portion of a metallic window frame, in which is a movable ventilator sash, the latter being shown in its closed position.

Figure 2 is a similar view, but with the sash partly open.

Figure 3 is a view similar to Figures 1 and 2, but with the sash fully open.

Figure 4 is a horizontal sectional view on the line 4 4 of Figure 3.

Figure 5 is a detail view on an enlarged scale'or` the sliding pivotal mounting of the sash on the frame.

Figure 6 is a detail perspective view of the slide block and its carrying spring.

Figure 7 is a perspective view of the side block and the associated portion of the spring.

In the embodiment disclosed the windowframe includes vertical side bars 8, a sill member 9 having an abutment flange 10, and a top rail 11. Suitably fixed to the underside of this top rail is a plate 12 having an outer downturned flange 13 that constitutes a depending hood and has its lower end slightly outset, as shown at 14. The vertical side bars 8 are provided with inset longitudinally disposed guide ribs 15.

The window sash is rectangular in form and consists of side bars 16, a bottom rail 17 provided with an outer depending weathering flange 18, and a top rail 19 provided with an inner upstanding flange 20. It will be noted by reference to Figure 1 that this sash fits snugly into the window frame with the lower flange 18 abutting the outer edge of the lower rail 9 and the upper flange 20 against the inner edge of the upper rail 11. It will also be noted that the outer edge of the top rail 19 of the sash fits behind the hood/13-14.

Links 21, pivoted at their lower ends to the lower portions of the side bars 8 of the frame, as shown at 22, have their upper ends pivoted as illustrated at 23 to the upper portions of the side bars 16 of the sash. The upper end of the sash has sliding mountings in the frame. To this end leaf springs 24 are secured at their lower ends by rivets 25 or other fasteners to the outer sides of the side bars 16 of the sash. These springs are slightly offset as shown in Figures 4 and 6 and their upper free ends project beyond thc top rail 19 of the sash, said projecting upper ends being journaled on the udgeons 26 of slide blocks 27, grooved as il ustrated at 28, to receive the guide ribs 15 of the side bars 8 ofthe frame. Preferably the gudgeons have washers 29 interposed between the springs and the guide block. By reference to Figures 4 and 7 it is to be noted that the gudgeons 26 are offset from the grooves 28 and on the side toward the sash so that the pivot axis of the springs and consequently of the sash is on the outer side of the window frame. As a consequence the corners of this sash, indicated at A, are brought out suiliciently far when the sash swings to open position, that the sash will pass a right angular position with respect to the frame and will actually move to substantially 94 degrees as dis- More than that it has been found that t-he upper end of the sash will clear the lower edge of the hood 14, without the necessity of having the hood projected outwardly to any material degree and said upper end of the sash will slide to a snug closing lit. More than that inasmuch as the corners of the sash at A do not have to be notched or cut away, the entire upper edge of the sash will be housed and no exposed cracks left at the corners.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be ap-H parent to those skilled in the art without further description and it will be understood t-hat various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages ot the invention.

That I claim, is:

l. In a window structure, the combination with a frame having a vertical side guideway, a swinging sash that operates in the frame., links connecting the sash and frame to canse its swinging movements, a slide block engaged with the guideway, and a mounting for the sash having a pivotal mounting on the slide block at one side of the vertical center of the guideway, said mounting coacting with the links to cause the upper end of the .sash to abut against and be stopped by the frame after said upper end has passed to a position lower than the lower end of the sash.

2. In a window structure, the combination with a frame having a vertical side guideway, a swinging sash that operates in the frame, links connecting the sash and trame to canse its swinging movements, a slide block engaged with the guideway, and a mounting for the sash having a pivotal mounting on the side of the vertical center ot the slide block that is nearer the sash, said mounting coacting with the links to cause the upper end of the sash to abut against and be stopped by the frame after said upper end has passed to a position lower than the lower end of the sash.

' 3. In a window structure, the combination with a frame having a. vertical side gnideway, a swing sash that operates in the frame, links connecting the sash and frame to canse its swinging movements, a slide block engaged with the guidewav, and a leaf spring mounted on the sash and having a pivotal mounting on the side of the vertical center of the slide block that is nearer the sash.

4. In a window structure, the combination with a Window frame having an end wall provided with a hood and a side wall provided with a longitudinal inwardly extending guide rib, a block slidable on the rib and having a groove in its rear side that receives the same, a swinging sash, links pivotally connecting the sash and frame, and a spring mounted on the sash and havinga pivotal connection with the block that is ol'set with respect to the groove and guide rib.

5; In a window structure, the combination with a window-frame having a. top end wall provided with a depending hood and side walls provided with longitudinal inset guide ribs, a swinging sash, blocks having grooves in their rear sides that slidably receive the ribs, said blocks being located above t-he upper corners of the sash, leaf springs secured to the opposite sides of the sash and having pivotal connections at their upper ends with the inner sides of the blocks and offset on the latter toward the sides that are adjacent the hood, links connecting the sash and frame to canse the sash to swing, said ofsetting of the pivotal connections permitting the upper end of the sash including the corners, to enter behind the hood and also to move downwardly to permit the upper corners of the sash to abut the sides of the frame at a line that is lower than the outer or free end of the sash when the sash is swung to open position.

In testimony whereof, I ailix my signature.

ADOLF H. SCHAFFERT.

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